Constantly expand your knowledge, but focus on the issues, which can be really helpful to others.

When you develop your knowledge, focus on 2, 3 issues max, and one book on each of them at the same time.
Democritus’s said:

Do not try to understand everything, because you will find everything incomprehensible.

I believe that’s very important principle of motivation (and help):
Alan Loy McGinnis in his book „Bringing out the best in people” wrote:

Thomas Aquinas, who knew a great deal about education and motivation, once said that when you want to convert a man to your view, you go over to where he is standing, take him by the hand and guide him. You don’t stand across the room and shout at him; you don’t call him a dummy; you don’t order him to come over to where you are. You start where he is, and work from that position. That’s the only way to get him to budge.